The Opus 10 by Jean-François Mojon for Harry Winston Rare Timepieces

The Opus series has lost some of its "oomph" with the lackluster #10. More avant guard than garde. Sadly leaving people like me vanting more. Either way, thanks to Ian Skellern of Underthedial for his images and video of the latest Harry Winston Rare Timepieces Opus X.

"This simplified model of the Opus 10 mechanism only demonstrates the minutes and GMT functions. It does not include the complexity of the hours and seconds".

The Shape of TimeInspired by planetary movements and the space-time continuum, Opus X captures the shape and dimensionality of time through the synchronous rotation of circular motions. Replacing a traditional fixed dial and watch hands, time is displayed as system of rotating indicators mounted on a revolving frame. Presenting a new technical challenge, as the frame completes a full rotation, the dials of each indicator turn in the opposite direction, ensuring orientation remains constant in any position.

Recalling the celestial mechanics of the solar system, the hand-wound mechanical movement functions as a planetary gear train, consisting of solar wheel, satellite wheels, and frame. The indicators for hours, minutes, seconds, and secondary timezone, are set on the individual satellite wheels, which orbit around the central, solar wheel. Each indicator is set at a slight incline, allowing the dials to follow the curvature of the case, while ensuring fluidity in rotation. The frame is driven separately to complete a full rotation in 24-hours.

Creating coherency throughout the design, the 72-hour power reserve operates as special planetary gear train, in which the diameter of the satellite wheel equals the radius of the crown wheel resulting in a linear indication. Balance regulation and chamfered bridges enhance the stability and functionality of the power reserve. A transparent backing shows the geometric precision and beautiful finishing of the movement.